Tractor extension frame



June 12; 1928.

1,673,612 J. H. WILSON TRACTOR EXTENSION FRAME Filed Oct. 6, 1925 5 Sheets-Sheet l J/M/b June 12, 1928.

'J. H. WILSON TRACTOR EXTENSION FRAME s, 1925 :5 sheet -sheet 2 attozwegJ June 12, 1928.

J. H. WILSON TRACTOR EXTENSION FRAME Filed Oct 1925 5 Sheets-Sheet 3 Patented June 12, 1928.

UNITED STATES PATENT OFFICE.

JOHN HART WILSON, F BURKBURNETT, TEXAS.

TRACTOR EXTENSION FRAME.

Application filed October 6, 1925.

brought out in the following detailed de scription and in the accompanying drawings. In the drawings a preferred embodiment is shown, but it will be understood that this particular form of the invention is setforth by way of example only, and that changes in the design and arrangement of the component elements may be made without departing from its spirit and scope.

In the drawings:

Fig. 1 is a side elevation of a tractor embodying my novel and improved front end frame construction;

Fig. 2 is a section on line 22 of Figure 1;

Fig. ure 1;

l is a section on line at+l of Figure 1. on a larger scale;

/ Fig. 5 is a section through a detail;

Fig. 6 is a side elevation of a tractor showing a modified form of the invention;

Fig. 7 is a side elevation of a detail of the modified form of tractor;

Fig. 8 is a section on line 77 of l igure and Fig. 9 is a partial plan view of the tractor, partly broken away, showing portion of the supporting frame construction.

The details of the winch operating mechanism of the tractor are fully illustrated and described in my prior patent and it is unnecessary to set them forth herein since they form no part of the present invention.

The rear axle of the tractor is indicated at 10 and the front axle at 11, each axle having wheels rotatably mounted thereon in the usual manner. The rear wheels 12 are the driving wheels, the front wheels being supporting and steering wheels adapted to be turned laterally about spindles at the ends of axle 11 by steering mechanism of conventional type. operated by means of a hand 3 is a section on line of Fig- Serial No. 60,888.

wheel 14, which is within reach of a driver seated upon the operators seat 15.

The engine casing is indicated at 16 and it will be understood that hereinafter the term engine casing imlicates generally an engine supporting and enclosing casing of any kind, including the cylinder block and either with radiator attached or otherwise. In the present instance the radiator is indicated at 16 and it will be seen that this is rigidly supported upon a portion 16 of the engine casing, the bottom of which portion of the casing is provided with downwardly extending parallel and spaced transversely extending flanges 16.

Side frame members are indicated at 171 these side frame members being exactly alike, having their rear ends secured to axle 10, their front ends provided with rings 18, and having intermediate their front and rear ends the cross b ace 19, the horizontal braces 19" which rigidly connect the respective frame members 17 to the top of the cylinder block, and the inclined braces 20, one of which connects the mid-portion of each side frame to the engine casing.

A U-shaped yoke 21 is pivoted at its center to the axle 11, midway of the length of the axle, by means of bolt 21, the upper ends of this yoke being rigidly secured to the side frame members by a number of bolts. By virtue of the pivotal connection between the yoke and the front axle, the axle is enabled to tilt in a verti -al plane about the pivot bolt 21 through a consideral'ile angular distance, permitting the wheels to adjust themselves to the irregularities of any broken ground over which the tractor is passing. To prevent movement of axle ll axially of the tractor, the radius rod is provided, this device compr the usual V-shaped member having its forward ends secured at 23, 23 to the axle ll and its rear end secured to the engine casing by a bolt 24. and nut 24:, bolt 2% extending axially of the tractor and passing through aligned apertures in the lug 16, 1(3 and through the radius rod. The radius rod may, of course, rook about the bolt 24, to a limited extent, as the axle 11 rocks in vertical plane.

Upon this bolt, in advance of the forward lug 16 but in rear of the radius rod, is a block 25, the block being provided with an aperture for the reception of the bolt. This block extends upwardly and forwardly a id is provided with two reeesses tor the reeeption oi" the lower ends of hra e tnenthers Zti. 2t; respeetiveiy which extend upwardly and forwardly t'ront hlock 35. the upper ends of these artns heing rigidly secured to tlte eross htnee it). The lower ends ol these rods are provided with heads 3o. 26' and the slots in llltlt'.l{ 25 are inverted T slots so that the rods may not pull out atter their insertion. The rods are adittstahle in length hy virtue of tle turn huehle devices it 'l he wineh druttt l1- indieated at and its supporting axle at 3 it will he seen that the weight of the drain pi'trt-tzi dmvtnvardly vertically through the yoke 31 to th axle ll. lt will he l'arther tilzi tt'vttl that hy virtue of the inelitted hraee rods :Zt't tlte weight of the forward end ot' the engine castng is transmitted to tlte et'oss ntetnher lit at a point ttot l'a' t'listant i'ront tlte yoke 21. through which this weight. or that portion of it which is not carried hy the rear axle, is transmitted downwardly to the axle ll attd wheels. The hrace rods it) not only support the weight o'l the trout end oi the engine easing. lttttwtlfit) eonstitute tneans tor stiti'ening the entire st'rueture. preventing twisting ol the frame. that is. preventing movement of the side 'l'rante tnenthers relativelv to eat-h other and to the engine easing. as the machine passes over rough ground. The volce 21 is apertttred tor the receptton ot the crank Iltt hy nteans of which the engine may he started.

The frame illustrated. including tnenthers ii. 2t) and it; has proven particularly advantageous itt practice. The hraees 2t) ntav he said to he aold down" hraees stnee they prevent retative vet-tiezl movement of the engine easing and side trante ntetnhers. tltat is. tltev prevent the trout ettd ol' the engine casing lrotn tnoving upwardly hetween. and relatively to. the side trante ntetnhers lT. The short horizontal lll'tlt'th' ltl prevent. vith some assistance l'ront hraees L horizontal movement ol the engine easing relatively to the side l'rante ntenthers li'. i- .nd the hraee rods 2t) trattsl'er the. weight of tlte ettgine easing. as previously poiiited ottt. to the t'rante tttetnhers 1T. through cross hraee l5). attd also l'nrther still'en the 'l'ratne eottstt'ltetiott. The l'ratne ahove descrihed is ol relatively light cottstruction. yet of great strength. attd will not warp or twist even when subjected to heavv stresses.

In l igttre (3 a ntoditied 'l'ornt of frame is shown in which the side 't'rante tnettthers are lottger itt order that two winches .31. nttt he supported tltereon. instead of a single winch. In llllri event additional hraee rods 5". are used. these rods extending forwardly front the hotitont ot' the engine easing and having their upper ends rigidly holted to the side trante tnentlters respectively. Turn httehles a l are provided l'or adjusting the port a ta'ntsidet'ahle portion ol the weight of tlte front end ot the engine. and this weight applied to the side tratne. tnenthers at a point very close to the l'ront yolze 21 \-'lticlt yoke transmits the entire weigltt ol' the front end of the traetor to tlte front axle ll. 'l'he two V-shaped hraees it; and .32 not only eonstitnte nteatts l'or snppotting the lront end ot the engine easing. lntt also prevent rela tive ntoventent ol' the side l'rante tttenthers 5t) i. e. twisting of the l't'atne. when the tractor passes over rough ground.

As will he seen l'ront l igttres T and H'the lower ends ol' rods :31. pass through apertures in the ends ota transverse ntetnher ."rl mounted on holt 2 intermediate the lugs lti. There is tto intert'erenee tln-t'etore itetween rods 52 and lllUt'lI 2T. Menther it :tl:() eonstittttes a spacing ntentlter tran mitting the rearward thrust oi the radius rod, or portion ot' this thrust. to the rear lug ltr. A spaced :53. comprising a short ttthnlar ntettther. is provided with the l ornt oi' the invention shown itt Figure l. for 1 like purpose.

Having thus deserihed the invention what claimed as new attd desired to he secured by Letters Patent is:

l. A tt'aetor contprisine itt ti'onthination. an engine easing a rear axle and rear traetiott wheels. the 1' -ar endot the easing being supported ttpott said axl and wheels. it front axle and wheels itt advance of the engine casing, and a frame by means ol which the forward end ot the engine casing is supported upon the front axle said t'ante including a side it ante member on each side (all the engine easing and extending iii a generally horizontal direetion from the rear axle lorwardly over the l'ront axle. a stthstantially vertieal ntetnher secured to each of said side ntetnhers and pivoted to the trout axle. a. horizontal hraee conneeting each side tnenther to the top ol the engine easing. a later ally ittelitted hraee eonneeting eaeh side member to the engine easing intermediate its top attd hottotn. and forwardly inclined hraettneans eonneeting the hottont ol' the casing to the side ntenthers in advanee of the engine casing.

2. A traetor 'eontprising in eotnhination. an engine easing. a rear axle having traction wheels thereon. a lront axle in advance of the engine easing. side trante ntenthers rigidly secured to the engine easing and projeeting forwardly thereof ahove the front. axle. a vertically disposed ntentler rigidly secured to the side trante ntetnl'ters and pivoted to the "front axle centrally thereof. a horizontal hraee eonneeting eaehsidente nther to the top ot the engine easing alatt- Ito erally inclined brace connecting each side member to the engine casing intermediate its top and bottom, and four brace rods,each rod being secured to the engine casing be neath the forward end thereof and connected to the side frame members, said rods being arranged in pairs transversely of the tractor.

3. A tractor comprising in combination, an engine casing, a rear axle and rear traction wheels, the rear end of the casing being supported upon said axle and wheels, at front axle and wheels in advance of the engine casing, and a frame by means of which the forward end of the engine casing is supported upon the front axle, said frame including a side frame member on each side of the engine casing and extending in a generally horizontal direction from the rear axle forwardly over the front axle, a substantially vertical member secured to each of said side members and pivoted to the front axle, a. horizontal brace connecting each side member to the top of the engine casing, a laterally inclined brace connecting each side member to the engine casing intermediate its top and bottom, and forwardly inclined adjustable brace means connecting the bottom of the casing to the side members in advance of the engine casing.

Al. A tractor comprising in combination, an engine easing, a rear axle and rear traction wheels, the rear end of the casing being supported upon said axle and wheels, a front axle and wheels in advance of the engine casing, and a frame by means of which the forward end of the engine casing is supported upon the front axle, said frame including a side frame member-"on each side of the engine casing and extending in a generally tical member secured to each of said side members and pivoted to the front axle, a horizontal b ace connecting each side memher to the top of the engine casing, a laterally inclined brace connecting each side member to the engine casing intermediate i its top and bottom, and forwardly inclined brace means connecting the bottom of the casing to the transverse member between the side members in advance of the engine casing.

5. A tractor comprising in combination, an engine casing, a rear axle and rear traction wheels, the rear end of the casing being supported upon said axle and Wheels, a front axle and wheels in advance of the engine casing, and a frame by means of which the forward end of the engine casing is supported upon the front axle, said frame including a side frame member on each side of the engine casing and extending in a generally horizontal direction from the rear axle forwardly over the front axle, a substantially vertical member secured to each of said side members and pivoted to the front axle, horizontal braces securing the side members to the engine casing, lateral inclined braces securing the side members to the lower portion of the engine casing, and forwardly inclined braces connecting the bottom of the casing to the side members in advance of the engine casin In testimony whereof I hereunto aflix my signature.

JOHN HART WILSON. 

